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Where are the migration pathways in the Great Lakes region?
The Great Lakes pose a challenge for monarchs as they travel from Canada to Mexico. The butterflies must avoid crossing open water unless the wind and weather are right.
1. Inspect this map. Which way do you think monarchs would travel as they depart Canada?
2. If a monarch were to fly over one of the Great Lakes, how many miles of open water would it have to cross? Where could a butterfly find the shortest over-water passage?